PV Solar Panels

Solar modules for photovoltaic systems

Offers of solar modules with monocrystalline or polycrystalline solar cells: Each PV module is characterized by special performance and high yields from the respective premium manufacturer. Solar panels based on mono- and polycrystalline silicon are the most commonly installed. The yields of monocrystalline modules are higher. The efficiency of monocrystalline modules is 18-22% higher than that of polycrystalline solar modules with approx. 13-17%. Therefore, polycrystalline modules are cheaper. Because aesthetics are playing an increasingly important role in private PV systems, modules with a black anodized frame and black backing foil are increasingly being installed for visual reasons.

In the case of shading on the roof, modules with external power optimizers are ideal. Glass-glass modules are preferred in snowy regions due to their longevity, and compressive load on the module front.

What is new is the development of half-cell modules, which have higher output per area and also better yield behavior in shading.

In our online shop, you will find the right solar panels. We offer you a wide range of high-quality solar panels. Order conveniently online and we will deliver your new solar panels directly to your front door!

*Please note that the delivery times for solar panels are currently around 10 to 20 days.

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The energy of the sun's rays, so-called solar energy, is generated inside the sun by nuclear fusion and reaches the earth as electromagnetic radiation. Here, the radiation can be used to generate electricity (photovoltaics) and heat for hot water (solar thermal energy). Since most of the energy is used during the day, solar generation and energy demand go well together.

How is solar energy used?

The technologies for converting solar energy into electricity and heat can be divided into two main groups: solar cells and solar thermal systems.

A solar cell or so-called photovoltaic cell (PV cell) converts solar energy into electricity by using the photovoltaic effect. Illuminating the front of the solar cell creates an electrical voltage between the front and back of the cell. The individual cells produce a low voltage of around 0.5 V. Solar cells are therefore often connected in series, which is known as solar panels or modules. The voltage is thus increased to an appropriate level for power generation. Solar cells are used both in smaller energy systems, for example in private households, and in large systems such as solar parks.

In addition to solar cells, there are also solar thermal systems. These contain solar collectors, which absorb the solar energy via an absorber and convert it into thermal energy. This thermal energy is then transferred to a water-filled tank, the solar storage tank, by means of a liquid or gas. With the help of heat exchangers, the thermal energy can then be used to heat water for drinking water and for heating purposes. Solar thermal collectors are also used for thermal cooling. The combination of photovoltaics and solar thermal energy is currently being researched in pilot plants. In these so-called hybrid collectors, the use of solar collectors has a cooling effect on the solar cells, which has a positive effect on their efficiency.

What is the status quo in solar energy?

In 2018, solar was the most built generation type. One reason for this is the sharp drop in the cost of solar panels. Solar energy is one of the cheapest forms of energy generation today. In connection with the low CO2 emissions of this type of generation, the proportion of solar energy will continue to grow significantly. The range for the use of solar energy is large. It ranges from photovoltaic systems on the roofs of private houses and commercial properties for self-sufficiency, to the use of solar panels on rented residential properties to supply residents with tenant electricity, to the use of large open-space solar systems.

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